44magman,
You and others please understand I am not slamming anyone and their choice of powder here. I just take a different tack, one for me which is making the most sense.
No question but what the 4895 and the 4064 are great powders and will make a 30/06 go bang and harvest deer in fine fashion, but if I am shooting a 30/06, why shoot it at .308 velocities? If I wish to shoot at .308 velocities, which are just fine for taking game, then buy a .308 and save some money on brass and powder.
Now, I have before me the 5th addition of the Nosler reloading manuel and under the section for the 30/06 with a 180gr bullet, both of the above powders are listed. However, the velocity difference between the slowest listed "max" load with IMR4895 (this is the slowest velocity listed of all powders) and the top listed "max" load with Reloader (RL) 22 is 330fps. IMR4064 is just 38 fps faster then the 4895.
The highest velocity as stated is with the RL22 at 2872fps while the "most accurate powder tested" is AA3100 at 2780fps.
In your O.P. you ask about powders which will do in both the 30/30 and 30/06 and has been stated a number of times, there are those powders, some of which have been listed.
Just be aware that just one or two powders which are choosen in a "one size fits all" manner simply cannot provide optimum results in both of these calibers. Workable yes, optimum no.
Your choice to make, just be safe and enjoy!
Keep em coming!
Crusty Deary Ol'Coot